Beach trip next month

Any tips or must-haves for taking a 7 month old to the beach?

My family rented a house at the end of next month and they have some things (high chair, pack-n-play, etc) so I’m not really worried about that. And my son loves car rides.

I’m mainly just wondering what your go-to’s are for the beach and pool. Obviously, sunscreen, hats, swim diapers, etc... but brands and other stuff that you love are super helpful!

Also, anywhere I can get cute one-pieces? Mama’s not two-piece beach bod ready just yet 🙈 haha

Thanks in advance!!